In the reaction 2mg (s) +o2 (g) + 2h2o (1)= 2mg2+ (aq) +4oh- (aq), which substance is reduced? a. mg b. o c. h2o d. oh e. none of the above (this is not a redox reaction)

C. H20 is reduced

The first equation has h20 part of it, then the second part doesn't have the substance h20

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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